Hi again Doug,
Here's a little bit of criticism from me

I think those shots are quite good, the only problem is that you didn't choose a very good scenery.
In the first shot is not bad at all for example, but in the second shot, the zoom emphasizes the lack of details of the mountain in the background. This should be avoided because this kills the quality of the shot. If you want to zoom on a plane, do it when the background is made of clouds or water. Avoid zooming on a blurry terrain

On the third shot, the angle is quite classic. Here again we have some blurry terrain, so you should try to choose an orientation of the view that show not too much of it. Also, if you want to make a screenshot in which the airplane is small like this, it's often a good idea to take the plane out of the center of the picture, with the techniques we discussed in previous topics together. On this shot, I would have taken the mountains on the left out of the shot, then I would have looked either a little bit more up, to show only the distant moutains, or down to show more of the "detailled" close terrain in a "top-down" view. Another possibility would have been to zoom out, and reduce the camera distance to compensate the smaller size of the aircraft. This would have made the surrounding terrain and textures look sharper. Don't zoom less than 0.60, or you'll get some bad fish-eye effect.
The last shot is cool. The only improvement could be to put the aircraft a little bit on the side, with the camera a little bit closer to the ground. In his way, you would still see the plane, the ground scenery details, and the background mountain and excellent sky. Other than that, that's quite a good shot
